Jason P Cleveland

US Patent:

6410907, Jun 25, 2002

Filed:

Apr 2, 2001

Appl. No.:

09/824452

Inventors:

Jason P. Cleveland - Ventura CA
David Grigg - Glastonbury CT

Assignee:

Veeco Instruments Inc. - Woodbury NY

International Classification:

G21K 510

US Classification:

250216, 250239, 25044211, 33568

Abstract:

A flexure carriage assembly has a carriage formed of a substantially rigid material. The carriage has four elongate columns arranged spaced apart and parallel to one another. Each of the elongate columns has first and second ends. The flexure carriage has four first cross members disposed between adjacent pairs of elongate columns and arranged to interconnect the first ends. The flexure carriage also includes four second cross members arranged between adjacent pairs of elongate columns and arranged to interconnect the bottom ends. The elongate columns and first and second cross members define a three-dimensional rectangular structure. The flexure carriage also has disposed centrally between the four elongate columns a translating section spaced equidistant between the first and second ends of the columns. A plurality of flexures are disposed between the translating element and elongate columns and between the elongate columns and first and second cross members in order to permit precise movement of the translating section in a plane according to applied forces against edges of the translating section. A pair of piezoelectric assemblies are connected to the translating section.

US Patent:

6720551, Apr 13, 2004

Filed:

Jun 6, 2002

Appl. No.:

10/164460

Inventors:

Jason P. Cleveland - Ventura CA
David Grigg - Glastonbury CT

Assignee:

Veeco Instruments Inc. - Plainview NY

International Classification:

G21R 510

US Classification:

250234, 250216, 33568

Abstract:

A flexure carriage assembly ( ) has a carriage ( ) formed of a substantially rigid material. The carriage has four elongate columns ( A, B, C, D) arranged spaced apart and parallel to one another. Each of the elongate columns has first and second ends. The flexure carriage ( ) has four first cross members disposed between adjacent pairs of elongate columns and arranged to interconnect the first ends. The flexure carriage also includes four second cross members ( A-D) arranged between adjacent pairs of elongate columns and arranged to interconnect the bottom ends. The elongate columns and first and second cross members define a three-dimensional rectangular structure. The flexure carriage also has disposed centrally between the four elongate columns a translating section ( ) spaced equidistant between the first and second ends of the columns. A plurality of flexures ( ) are disposed between the translating element and elongate columns and between the elongate columns and first and second cross members in order to permit precise movement of the translating section ( ) in a plane according to applied forces against edges of the translating section. A pair of piezoelectric assemblies ( ) are connected to the translating section.

US Patent:

6884981, Apr 26, 2005

Filed:

Aug 23, 2002

Appl. No.:

10/226625

Inventors:

Roger Proksch - Santa Barbara CA, US
Jason Cleveland - Ventura CA, US
Dan Bocek - Goleta CA, US

Assignee:

Asylum Research Corp. - Santa Barbara CA

International Classification:

G02B007/04

US Classification:

2502013, 250306

Abstract:

An apparatus and method for measuring optically the position or angle of a variety of objects or arrays of objects, including cantilevers in scanning probe microscopy, micromechanical biological and chemical sensors and the sample or a probe in surface profilometry. The invention involves the use of one or more diffractive optical elements, including diffraction gratings and holograms, combined with conventional optical elements, to form a plurality of light beams, each with a selectable shape and intensity, from a single light source, reflect the beams off mechanical objects and process the reflected beams, all to the end of measuring the position of such objects with a high degree of precision. The invention may also be used to effect mechanical changes in such objects. Devices with these improvements have numerous applications, including molecular force measurements, atomic force microscopy and manipulation technology, lithographic manufacturing, nanometer scale surface profiling and other aspects of nanotechnology.

US Patent:

7002138, Feb 21, 2006

Filed:

Apr 12, 2004

Appl. No.:

10/822352

Inventors:

Jason P. Cleveland - Ventura CA, US
David Grigg - Glastonbury CT, US

Assignee:

Veeco Instruments Inc. - Woodbury NY

International Classification:

G21R 5/10

US Classification:

250234, 250216, 25044211, 33568

Abstract:

A flexure carriage assembly () has a carriage () formed of a substantially rigid material. The carriage has four elongate columns (A, B, C, D) arranged spaced apart and parallel to one another. Each of the elongate columns has first and second ends. The flexure carriage () has four first cross members disposed between adjacent pairs of elongate columns and arranged to interconnect the first ends. The flexure carriage also includes four second cross members (A–D) arranged between adjacent pairs of elongate columns and arranged to interconnect the bottom ends. The elongate columns and first and second cross members define a three-dimensional rectangular structure. The flexure carriage also has disposed centrally between the four elongate columns a translating section () spaced equidistant between the first and second ends of the columns. A plurality of flexures () are disposed between the translating element and elongate columns and between the elongate columns and first and second cross members in order to permit precise movement of the translating section () in a plane according to applied forces against edges of the translating section. A pair of piezoelectric assemblies () are connected to the translating section.

US Patent:

7038443, May 2, 2006

Filed:

Oct 10, 2003

Appl. No.:

10/683592

Inventors:

Roger Proksch - Santa Barbara CA, US
Jason Cleveland - Ventura CA, US
Dan Bocek - Goleta CA, US

Assignee:

Asylum Research Corporation - Santa Barbara CA

International Classification:

G01B 7/14

US Classification:

32420718, 32420724, 34087036

Abstract:

A linear variable transformer (LVDT) for use in a transducer. The LVDT has a non-ferromagnetic core which may eliminate Barkhausen noise and thereby improve the sensitivity of the resulting measurements. In one aspect, this system may be used in an atomic force microscope.

US Patent:

7084384, Aug 1, 2006

Filed:

Mar 28, 2005

Appl. No.:

11/093187

Inventors:

Roger Proksch - Santa Barbara CA, US
Jason Cleveland - Ventura CA, US
Dan Bocek - Goleta CA, US

Assignee:

Asylum Research Corporation - Santa Barbara CA

International Classification:

G02B 7/04

US Classification:

2502013, 250306

Abstract:

An apparatus and method for measuring optically the position or angle of a variety of objects or arrays of objects, including cantilevers in scanning probe microscopy, micromechanical biological and chemical sensors and the sample or a probe in surface profilometry. The invention involves the use of one or more diffractive optical elements, including diffraction gratings and holograms, combined with conventional optical elements, to form a plurality of light beams, each with a selectable shape and intensity, from a single light source, reflect the beams off mechanical objects and process the reflected beams, all to the end of measuring the position of such objects with a high degree of precision. The invention may also be used to effect mechanical changes in such objects. Devices with these improvements have numerous applications, including molecular force measurements, atomic force microscopy and manipulation technology, lithographic manufacturing, nanometer scale surface profiling and other aspects of nanotechnology.

US Patent:

7165445, Jan 23, 2007

Filed:

Aug 25, 2004

Appl. No.:

10/926787

Inventors:

Dan Bocek - Goleta CA, US
Jason Cleveland - Ventura CA, US

Assignee:

Asylum Research Corporation - Santa Barbara CA

International Classification:

G01N 13/16
G05B 13/02
G12B 21/00

US Classification:

73105, 700280

Abstract:

A digital system for controlling the quality factor in a resonant device. The resonant device can be any mechanically driven resonant device, but more particularly can be a device that includes a cantilever within its system, such as an atomic force microscope. The quality factor can be digitally controlled to avoid noise effect in the analog components. One of the controls can use a direct digital synthesizer implemented in a way that provides access to the output of the phase accumulator. That output is a number which usually drives eight lookup table to produce a cosine or sign output wave. The output wave is created, but the number is also adjusted to form a second number of the drives a second lookup table to create an adjustment factor. The adjustment factor is used to adjusts the output from the cosine table, to create an adjusted digital signal. The adjusted digital signal than drives a DA converter which produces an output drive for the cantilever.

US Patent:

7233140, Jun 19, 2007

Filed:

Apr 11, 2006

Appl. No.:

11/402482

Inventors:

Roger Proksch - Santa Barbara CA, US
Jason Cleveland - Ventura CA, US
Dan Bocek - Goleta CA, US

Assignee:

Asylum Research Corporation - Santa Barbara CA

International Classification:

G01B 7/14

US Classification:

32420718, 32420724, 34087036

Abstract:

A linear variable transformer, or LVDT, for use with the transducer, which has a non-ferromagnetic core that can eliminate Barkhausen noise. By eliminating the Barkhausen noise, the sensitivity of the resulting measurements can be improved. The LVDT is formed of multiple coil assemblies which are moved relative to one another, and by using a non-ferromagnetic material, are capable of obtaining 1 μ resolution or better. Circuitry for obtaining a synchronous output is described, allowing a differential amplifier to synchronize one signal to another.